The Chevy Suburban charged into the Millenium with a redesign atop a new platform and power coming from the now legendary Gen III small-block architecture. In addition to the 5.3L and 6.0L LS-based engines, the big-block 8.1L also made its debut. Whether you need some more down low grunt to pull your trailer comfortably, need to eke out a couple extra MPG, or just need to hear that LS power under throttle, we have the parts you need to make it happen.